If you're set on canceling, send a formal request in writing, either via email or certified letter. Be sure to include your property address, the date, and a clear statement that you're terminating the agreement. If you want to work with a different agent in the future, be clear about the termination timeframe.
Canceling a listing contract for your home should be a straightforward process, particularly if your real estate agent hasn't brought in any potential buyers. You can ask for a release or, if it's a large firm, request a different agent. The terms of cancellation should already be spelled out in your contract.
"You may cancel this contract at any time before midnight on the day seven days after the day on which you sign the contract, or before a later day if specified in the contract that is after the later of the day on which you sign the contract or you receive the facility's disclosure statement.
You should use the Listing Cancellation Form when you wish to terminate an existing listing agreement with your real estate agent.
All that is required in California is to notify the listing agent in writing.
The 14 day cooling off period During the first 14 days after you have entered the contract you have the right to leave the contract without incurring a penalty.
The easiest way out is to sit down with the real estate brokerage the realtor works for and discuss breaking the agreement. Many reputable brokerages who wish to keep a favorable relationship with your business will agree to peaceful contract termination.